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ACPICA: Fix access width for reset vector 

Section 4.7.3.6 of the ACPI specification requires that the register width
of the reset vector be 8 bits. Windows simply hardcodes the access to be
a byte and ignores the width provided in the FADT, so make sure that we
do the same.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Matthew Garrett 2011-03-11 16:12:18 -05:00 committed by Len Brown
parent 521cb40b0c
commit f17d9cbf20
1 changed files with 5 additions and 5 deletions
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10
drivers/acpi/acpica/hwxface.c
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@ -80,14 +80,14 @@ acpi_status acpi_reset(void)
if (reset_reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
/*
* For I/O space, write directly to the OSL. This bypasses the port
* validation mechanism, which may block a valid write to the reset
* register.
* For I/O space, write directly to the OSL. This
* bypasses the port validation mechanism, which may
* block a valid write to the reset register. Spec
* section 4.7.3.6 requires register width to be 8.
*/
status =
acpi_os_write_port((acpi_io_address) reset_reg->address,
acpi_gbl_FADT.reset_value,
reset_reg->bit_width);
acpi_gbl_FADT.reset_value, 8);
} else {
/* Write the reset value to the reset register */